共查询到18条相似文献,搜索用时 858 毫秒
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文章分别研究了表面活性剂、油相材料和木粉水分对连续生产线上膨化硝铵炸药结块性影响。研究发现,表面活性剂、高熔点油相、低水分木粉可以降低炸药结块性,尤其以表面活性剂的防结块效果最佳;同时采用表面活性剂、高熔点油相和低水分木粉能有效解决夏季高湿环境下全连续生产线上膨化硝铵炸药结块问题,以保证产品爆炸和贮存性能稳定。 相似文献
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表面活性剂改善膨化硝铵晶变的研究 总被引:1,自引:0,他引:1
测定并比较了由典型的阴离子表面活性剂(SDS)、阳离子表面活性剂(OCTA)、非离子表面活性剂(TW-80)及其各自等摩尔混合体系处理而得的各类膨化硝铵的晶变性质及抗结块性,探讨了表面活性剂对膨化硝铵晶变性质的影响机理,并得出了效果较好的膨化硝铵抗结块剂。 相似文献
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硝酸铵的防潮与防结块 总被引:2,自引:0,他引:2
本文对硝铵炸药的主要成分——硝酸铵的结块与顶防,进行了国内外有关的专利和文献查阅综述。内容涉及硝酸铵的理化性质、结块的影响因素和结块机理、有关抗结块添加剂的选择。表面活性利由于其特殊的结构和性能,已被广泛应用于硝酸铵的防潮防结块,其最大优点是效果好,用量少,而对硝酸铵的其它性能无根本性的影响。表面活性剂应用于硝酸铵防潮防结块中越来越引起人们的注意。 相似文献
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本研究初步探索了高分子型表面活性剂的用量、添加过程和添加方式对氧化锆陶瓷粉末性能的影响。实验结果表明:在陶瓷粉末制备过程中,适当地利用高分子型表面活性剂代替醇脱水工艺,同样可以制取高活性、超细 ZrO_2、ZrO_2(Y_2O_3)粉末。适量的高分子型表面活性剂可以改善粉末制备过程中组分粒子的分散状态,对控制粉末的团聚状态,提高组分的均匀性有着积极的意义。而且在某种程度上,提高了粉末性能,缩短了制粉工艺周期,降低了成本。本文还就粉末性能的综合评价提出了一些看法。 相似文献
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Control of pore size distribution of silica gel through sol-gel process using inorganic salts and surfactants as additives 总被引:1,自引:0,他引:1
Tadahiro Murakata Shimio Sato Takashi Ohgawara Tetushi Watanabe Tohru Suzuki 《Journal of Materials Science》1992,27(6):1567-1574
For control of the pore size distribution of silica gel, the gel was prepared using the sol-gel process modified by adding several kinds of inorganic salts and surfactants. The addition of any inorganic salt decreased the gel surface area and depressed the formation of mesopores. The surface area and the volume occupied by mesopores changed with the valency of the cation of the salt used. When surfactants were employed as additives, the surface area and the pore size distribution were greatly dependent on the kind of head group of the surfactant: non-ionic surfactant addition monotonously increased the surface area owing to the formation of larger mesopores; anionic surfactant addition significantly decreased the surface area because of the decrease in the volume of mesopores; cationic surfactants caused the surface area to decrease with small additions as anionic surfactants did, while further addition raised the surface area. The rise in the surface area was due to a marked formation of smaller mesopores. These results are discussed on the basis of the interfacial properties of the additives. 相似文献
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介绍了一种低爆速粉状乳化炸药制备方法,通过乳化、钢带冷却、固化、粉化的工艺流程,采用控制炸药粒度的方法得到1种低爆速炸药。该炸药外观为细颗粒状,粒度1.2~2.5mm、装药密度0.90~1.05 g/cm~3。试验证明,该低爆速炸药具有雷管起爆感度,爆速2200~2700 m/s、猛度8~12 mm、传爆长度>12 m(装药直径32mm),储存期>6个月。该低爆速炸药生产工艺简单、爆速调节方便、安全性好,可满足特殊控制爆破的需要。 相似文献
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表面活性剂辅助水热合成异形薄水铝石 总被引:1,自引:0,他引:1
为了从廉价的无机铝盐制备高性能的氧化铝前驱物,用表面活性剂调控形貌制得了异形薄水铝石.采用XRD和SEM等表征手段,研究了十二烷基磺酸钠、十二烷基苯磺酸钠、十六烷基三甲基溴化铵、酒石酸钠和聚乙二醇2000共4种表面活性剂对硫酸铝和尿素水热合成薄水铝石晶体结构和形貌的影响,并对其晶体结构和形貌变化的形成机制进行了初步分析.研究表明:表面活性剂均不改变产物的晶型,但可对产物的形貌和粒径进行一定程度的调控,尤其是160℃下加入酒石酸钠时产物的结晶度明显降低,其粒子由数个微米的针状团簇体转变为0.5~3μm的圆饼状粒子;硫酸铝和尿素水热合成薄水铝石时加入适量酒石酸钠可以实现产物形貌的有效调控. 相似文献
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采用无机纳米锑掺杂二氧化锡(ATO)和有机聚醚酯(PEE)协同提高聚对苯二甲酸乙二酯(PET)的抗静电性能,合成了聚对苯二甲酸乙二酯-聚醚酯/锑掺杂二氧化锡纳米复合材料(PET-PEE/ATO)。使用Ozawa方程和Liu-Mo方程研究了PET-PEE/ATO纳米复合材料的非等温结晶过程。Ozawa方程研究发现,在非等温结晶过程中,PET、PET-PEE、PET/ATO、PET-PEE/ATO的成核性能依次提高。Liu-Mo方程发现,ATO和PEE的加入分别促进了异相成核作用和加快了结晶生长,PET-PEE/ATO结晶成核性能最好,结晶速率最快。 相似文献
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Thin inorganic membranes are of importance to a number of applications such as sensing, catalysis and separation. Here, we present a method to fabricate free-standing sheets of various inorganic materials such as C, Si, Pt, Fe and CdSe with thicknesses ranging from a few to a hundred nanometres. First, an array of holes in a flat substrate was uniformly covered by dried-foam-film (DFF) self-standing reversed bilayers of surfactants. As the surfactant bilayers are sufficiently robust to allow deposition of amorphous films, a variety of inorganic films were then fabricated on the DFFs using physical deposition techniques such as sputtering, electron-beam deposition and thermal deposition. The films thus obtained showed improved thermal stability compared with the DFFs. This fabrication method therefore provides a flexible and reliable way to readily produce free-standing inorganic multilayered structures. 相似文献